EP2787222A1 - Dispositif et agencement de verrouillage d'éléments filetés - Google Patents

Dispositif et agencement de verrouillage d'éléments filetés Download PDF

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Publication number
EP2787222A1
EP2787222A1 EP20140001157 EP14001157A EP2787222A1 EP 2787222 A1 EP2787222 A1 EP 2787222A1 EP 20140001157 EP20140001157 EP 20140001157 EP 14001157 A EP14001157 A EP 14001157A EP 2787222 A1 EP2787222 A1 EP 2787222A1
Authority
EP
European Patent Office
Prior art keywords
locking
hook
screwable
ring
recesses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140001157
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German (de)
English (en)
Other versions
EP2787222B1 (fr
Inventor
Sylvain Derouault
Stéphane Hericher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Filing date
Publication date
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Publication of EP2787222A1 publication Critical patent/EP2787222A1/fr
Application granted granted Critical
Publication of EP2787222B1 publication Critical patent/EP2787222B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • F16B39/26—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/08—Brake cylinders other than ultimate actuators
    • B60T17/085—Spring loaded brake actuators
    • B60T17/086—Spring loaded brake actuators with emergency release device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/32—Locking by means of a pawl or pawl-like tongue

Definitions

  • the present invention relates to a device and an arrangement for locking screwable elements, and more particularly relates to a screw-integrated and / or integrable device for preventing an automatic release of a screw, nut or nut and / or for preventing an undesirable change of setting a Stellschrauban für assembly.
  • elements such as housing parts, attachments, components and / or entire assemblies are fixed by means of screw connections to other parts of an overall structure in a predetermined position.
  • Stellschrauban angelen must be set basic and then fixed, but later remain easily adjustable. Often after assembly it should be prevented that screw connections can be released automatically or basic settings can be changed automatically.
  • Such measures are, inter alia, disadvantageous in that prevention of an automatic release can not be ensured in some cases, for example in environments in which a screw is subject to shocks and / or vibrations, or counteracts the securing effect if necessary, easy release of the screw, for example a used adhesive allows only a tedious release or a tight or tight-fitting and / or corroded sap only with difficulty to remove from its bore.
  • screw connections for example between inspection and maintenance intervals, do not automatically loosen, loosen and / or displace.
  • a simple visual inspection for a determination of a proper condition of the screw for example in the context of routine checks by a driver of a vehicle before, during and / or after a trip to be possible.
  • maintenance operations and / or adjustments by securing mechanisms should not be unnecessarily expensive or complicated for economical vehicle operation.
  • the invention is therefore an object of the invention to provide a device for locking screwable elements, with a screw connection is cost-effective and easy to handle safely locked and easily unlocked.
  • the invention thus provides in the core an integrated screw lock or screw lock which is installed as at least one additional part on or in a head section of a screw, a nut, a threaded arrangement such as a threaded spindle of a spring brake cylinder or the like.
  • the integrated screw lock has an elastically or resiliently deformable, bow-shaped or wing-shaped portion which in a relaxed state (a rest position) larger or at least in a width direction (a direction perpendicular to the axial direction of the screw) expands builds as a on the screw , Nut or thread assembly fitting tool for fixing, adjusting and / or loosening the screw, nut or thread assembly, such as a socket device such as a nut or the like.
  • the tool is placed on the head section and also guided over the bow-shaped or wing-shaped section. Since the internal dimension of the tool is smaller than the extension of the bow-shaped or wing-shaped section, this compresses the bow-shaped or wing-shaped section to the inner dimension of the tool, i. H. deformed elastically to a smaller extent with a certain tension. As a result, the bow-shaped or wing-shaped section is set in a non-latching state and can be rotated together with the screw, nut or thread arrangement.
  • the screw, nut or thread assembly is now determined by turning the tool in the intended manner, for example, with a predetermined Tightening torque tightened against a bearing part, the screw lock in the head section rotates to a desired end position.
  • a latching portion or locking portion or such device On the bearing part a latching portion or locking portion or such device is arranged, which has a plurality of recesses, which are dimensioned in their dimensions and distances such that end portions of the integrated screw locking or ends of the bow-shaped or wing-shaped portion upon reaching the desired end position suitable fine resolution and latching can engage in it.
  • the latching portion may be molded directly into the bearing part, for example by suitable one-piece machining of the bearing part, be pressed into a recess of the bearing part or rest on this, or be provided as a separate element in a disc-like shape or the like, if a Verwarverhi matterssrial or Securing effect providing friction or frictional engagement between associated surfaces of the bearing part and the disc, for example by extending from the disc shape in the bearing part bolt or pin-like formations or the like, is suitable and sufficient.
  • the bow-shaped or wing-shaped section elastically deforms and automatically returns to its relaxed rest position, thereby gripping its ends into respectively adjacent recesses of the neck Snap-in section.
  • the bow-shaped or wing-shaped portion against rotation for example, in a suitable gap, is arranged on the head portion of the screw, nut or thread assembly and without the action of the tool, the bow-shaped or wing-shaped portion in its relaxed rest position with remains the recesses of Einrastabitess, in this state, an automatic release or adjustment of the screw securely prevented even under difficult conditions.
  • the integrated screw lock on the bow-shaped or wing-shaped section is again deformable in such a way that, when the tool is placed on the head section, i. H. is moved again by a renewed pressure by means of the tool, from the latching engagement with the latching section and allows a rotation of the screwable head section again.
  • the bow-shaped or wing-shaped section is designed such that tools with standard widths produce the deformation during setting and / or release, and thus no special tool is necessary.
  • An arrangement of the head section of a screwable part, bow-shaped or wing-shaped section and latching section which is suitably shaped for the rotationally secure reception of the locking part forms an integrated screw locking system or a system or arrangement for locking screwable elements.
  • a device for locking a screwable element characterized by a ring member having a circumference in a first plane; at least two locking portions extending from the ring member having a longitudinal direction in a second plane perpendicular to the peripheral plane of the ring member, each locking member including: a web connecting the locking portion to the ring member in the second plane and a web member having a predetermined one Curvature around and / or at which the locking portion upon application of a compressive force from the outside in the second plane is deflectable; a pressure receiving portion for receiving the pressing force, which adjoins the web in the longitudinal direction and is arranged with a surface in a third plane perpendicular to the second plane; and a hook-shaped end portion, which adjoins the pressure receiving portion in the longitudinal direction in the second plane, moves into a release position in the force of pressure exerted by the locking portion, and automatically returns to a locking position in a pressure-unactuated manner.
  • the device is thus a lightweight, preferably one-piece, elastically resiliently deformable and three-dimensional part, which is inexpensive to manufacture and in which the ring member lies in a first plane, the locking wing extends in a second, perpendicular to the first plane or orthogonal plane, and, substantially, the sliding surface (s) of the pressure receiving portion over which a tool is slidably seated lie in a third plane perpendicular or orthogonal to the first plane and the second plane.
  • Substantially is intended to mean here that the sliding surface of the pressure-receiving element lies in a plane parallel to the side surface of the screwable element and the periphery of the Aufgleitteil arrangements is also in planes parallel to the side surface, the Aufgleitteil compounds itself but slightly inclined to the sliding surface and so that it is not completely exactly in its plane.
  • At least two locking sections extend diametrically opposite from the ring part to the outside.
  • a device with two locking sections is particularly efficient to manufacture and easy to install due to its symmetry properties.
  • a device with more than two locking sections accordingly provides more locking positions and is advantageous for applications in which higher anti-rotation forces or a better anti-rotation effect is desired.
  • At least one of the circumferential plane of the ring member spaced support is formed at the located on the ring part end of the web.
  • Such a support advantageously defines a predetermined position of the device and thus the maximum length extension of each locking portion in the use state, which in turn defines the position of the locking position. This makes positional relationships in the environment easier to interpret.
  • the ring member forms an elastic and non-closed ring with an open portion, the non-closed ring in a rest position to a predetermined diameter, and it generates outside the rest position acting on a return to the rest position restoring force.
  • the locking device can be easily placed in the opening by gently squeezing the open ring member to a diameter smaller than that of an opening, such as a bore in a screwable element into which the locking device is to be inserted. If the ring part is then released, it relaxes and expands automatically, resetting it again, thereby bracing the locking device automatically centered and falling securely against the inner wall of the opening.
  • a circular attachment member such as a guide rod, which is to pass through the ring member, it can be easily placed around the attachment member.
  • the ring part then released, relaxed and retracts automatically resetting together, and thereby biases the locking device, optionally in a kind of annular groove on the attachment part, stationary and slipped around the attachment part.
  • the web portion is formed with predetermined curvature between flat portions of the locking portion that pressure force acts deflected only the following in the longitudinal direction of the web portion of the locking portion and this part remains undeformed in the second level.
  • a deformation of the device only at the curved web portion, d. H. essentially around a center point of the radius of curvature. If the curved web part is suitably designed to be elastic, it is avoided that the remaining sections of the device, in particular the lower part of the locking section, which provides the locking action, likewise bend. As a result, the positioning and the locking action of the device are not affected by the deformation thereof.
  • the pressure receiving portion has a predetermined length in the longitudinal direction of the locking portion, the surface extends along this predetermined length in the third plane, the surface is divided into a vertically upwardly Aufgleitteil compounds and a divisional sliding surface, and is the Aufgleitteil composition against the sliding surface in one predetermined angle to the ring part inclined.
  • this creates a functional three-dimensionality of the device which, with the smallest possible dimensions and thus the smallest possible increase in size compared with a screwable element without a device provides a good pressure force introduction into the device and their implementation in a deflection of the hook-shaped end portion at the same time reliable locking action.
  • the hook-shaped end portion is formed to be U-shaped at a lower end of the pressure-receiving portion, and the leg end of the hook-shaped end portion remote from the pressure-receiving portion is shortened and has a portion oblique to the longitudinal direction at a predetermined angle on the underside thereof.
  • the U-shaped molding advantageously allows improved security against falling out of the device used and also a smaller design while simultaneously improved engagement design at the locking location.
  • An arrangement for locking a screwable element includes the above-mentioned device, the screwable element, wherein the screwable element has in its surface at least one recess which receives the device and / or sections of the locking portion against rotation, and a latching device outside of the device and the screw Element which is positionally associated with the hook-shaped end portion of the device so that the hook-shaped end portion engages latching in the locking state of the arrangement in a recess in the latching device.
  • the latching means is disposed annularly in a bearing member guiding and / or accommodating the screwable member and along the ring mold has a plurality of recesses at predetermined intervals from each other, an annular disc member is provided, the plurality of recesses resting on the latching member covering the upper side, on an inner circumference forms a travel limit for the hook-shaped end portion to the outside, and counteracts in cooperation with the restoring force of the locking portion in the rest position of a pressure-unencumbered unlocking, the screw-threaded element in the longitudinal direction and corresponding to the U-shape of the hook-shaped end portion a Circumferentially trough-shaped recess for receiving the hook-shaped end portion in its pressure-loaded unlocking position, and the outer surface of the screwable element is spaced in the longitudinal direction to an inner side profile of the locking portion, that sufficient space for the deflection of the locking portion is provided in the pressure-applied unlocking position ,
  • the screw-threaded element centered on top has a round-shaped opening for receiving the ring member, wherein a diameter of the opening is smaller than the predetermined diameter of the ring member in the rest position, that an accommodated in the opening ring part tamperproof clamped in the opening.
  • the depth of the recess in the surface of the screwable element and the support at the located on the ring part end of the web are associated in such a way that correspond to the hook-shaped end portion of the device and the formation in the latching portion in the height direction positionally.
  • the arrangement thus advantageously forms a defined cooperating system in which positional relationships are adapted to one another such that a locking section of a device inserted into the recess of the screwable element readily corresponds to a recess in the latching device.
  • the distance between two recesses is selected such that in a pressure force unbommentened state starting from an reached end position of the screwable element engages a lying between two recesses hook-shaped end when acting on an external force automatically latching in the respective nearest recess.
  • the locking effect occur automatically when sufficiently strong shocks occur, the screwable element and thus the locking device to the necessary Continue to turn away.
  • manual actuation of the screwable element can thus account for a final check on the presence of the locking effect on the one hand and on the other hand, the screwable element in any exact - even lock-free - position are brought, as needed, an immediate automatic locking takes place in the immediate vicinity of this position ,
  • the plurality of recesses 100 can advantageously be arranged equidistantly along a circumference of the latching device.
  • the production of the latching device is kept simple, and can still be achieved by a suitable distance selection with respect to a desired position sufficiently accurate and simultaneously locked holding the screw-threaded element.
  • the plurality of recesses are arranged unequally spaced along a circumference of the latching device, wherein in a portion of the circumference in which a predetermined Position of the screwable element is located, the distance between two adjacent recesses is smaller than the distance between two adjacent recesses in other portions of the circumference.
  • a partial increase and / or reduction of the resolution of the locking effect is particularly advantageous in cases in which a deviation of the screwable element from a predetermined basic or desired position is to be kept as low as possible.
  • FIGS. 1 to 4 Due to the symmetry properties are in the FIGS. 1 to 4 once referred to by reference numerals elements that functionally and essentially the same with possibly deviating orientation elsewhere, not necessarily again provided with reference numerals. It is understood, however, that such, mutually corresponding elements with the same reference numerals are providable.
  • a preferred application of the device and the system for locking screwable elements takes place, for example, in a spring-loaded or spring-loaded housing of a spring brake cylinder for a brake system of a vehicle, in particular a commercial vehicle.
  • Such a spring brake cylinder usually has a housing in which a spring brake piston is guided, which divides the interior of the housing into a pressurizable spring brake chamber and a spring receiving spring chamber.
  • the storage spring is arranged so that it biases the spring brake piston in the direction of the spring brake chamber. So that a parked or braked vehicle, in which the spring brake cylinder is arranged, can be moved, the spring brake chamber is so pressurized with compressed air, that the spring brake piston is moved against the spring force of the storage spring.
  • a braking device coupled to the spring brake piston is excluded Engagement with a brake disc or the like, so that the vehicle is not braked further.
  • such a spring brake cylinder may be coupled in a known manner with a service brake cylinder.
  • the spring brake piston is displaced in the direction of the spring brake chamber due to the bias of the accumulator spring such that the brake device coupled to the spring brake piston engages and carries out a braking of the vehicle.
  • This is to be reliably prevented for example in a line breakage of the brake pressure line while driving that a commercial vehicle continues unrestrained and thus difficult to control.
  • This emergency braking in the absence of compressed air supply is also used in over long periods parked trailers, etc., so that unintentional rolling away of these vehicles can be prevented.
  • the braking action thus exerted by the mechanical accumulator spring in the spring brake cylinder in such cases should be able to be solved, for example, to move parked vehicles or to clear a lane blocked due to a breakdown, so that the vehicles in question moved and z. B. traffic problems can be lifted.
  • This threaded spindle acts in a known construction with a fixed in the axial direction on the housing of the spring brake cylinder arranged output member such. As a mother, together, so that rotation of the threaded spindle causes a linear displacement thereof.
  • the inner end of the threaded spindle in the axial direction is formed with a projection that can be brought into abutment with a contact surface on the spring-loaded piston. Due to the introduced by the rotational movement of the linear displacement of the threaded spindle in the axial direction thus there is also a linear displacement of the spring accumulator piston against the biasing force of the accumulator spring, so that in this way the cooperating with the spring accumulator piston braking device can be solved.
  • Fig.1 shows a section of a known combined service brake and spring brake cylinder 1 (combination brake cylinder) of a pneumatic or electro-pneumatic brake system of a commercial vehicle.
  • This includes a service brake device, not shown here with a service brake cylinder with a housing in which a pneumatically actuated service brake piston is guided, which operates via a service brake piston rod, for example, a disc brake of the commercial vehicle.
  • the combination cylinder 1 further comprises a in Fig.1 visible spring brake device 2 with a spring brake cylinder 4 with a housing 6 to which a flange 8 is coupled such that the housing 6 and the flange 8 form a substantially closed unit.
  • the service brake cylinder can be coupled to the flange 8.
  • a tensioned by means of pneumatic pressure in a spring brake chamber 10 against the spring force of a storage spring 12 in a spring chamber 14 spring brake piston 16 is guided, through which the service brake piston can be acted upon in Bremszuspannides.
  • This accumulator spring 12 is supported on the one hand on a bottom 18 of the housing 6 and on the other hand on a piston plate 20 of the spring brake piston 16 from.
  • the service brake cylinder and the spring brake cylinder 4 form one behind the other coaxially arranged then the combination brake cylinder. 1
  • a spring brake piston rod 22 of the spring brake piston 16 sealingly penetrates a passage opening 24 in a dividing wall 26 integral with the flange 8 between the spring brake cylinder 4 and the service brake cylinder and can abut with its end face on the service brake piston, not shown.
  • the spring brake piston 16 also has a guide section 28, which is circumferentially guided sealed in a cylinder portion of the housing 6.
  • the spring brake piston 16 against the action of the accumulator spring 12 by venting the spring brake chamber 10th be brought into release position. Furthermore, by venting a service brake chamber, which extends between the partition 26 and the service brake piston, the latter against the action of a on the one hand on the service brake piston and on the other hand supported on an end wall of the service brake cylinder return spring are brought into Zuspann too.
  • a mechanical emergency release device 30 is at least partially integrated within the spring brake piston rod 22, with which the spring brake can be emergency or emergency dissolved in case of pressure failure. With the help of the emergency release device 30, a mechanical emergency release of the spring brake by manual external action is possible.
  • the emergency release device 30 is in this case arranged centrally in the spring brake cylinder 4 and engages through a central opening of the housing 6 in a cavity 32 of the spring brake piston rod 22 a. It has here a threaded spindle 34, at the outer end in the known arrangement a hexagonal head 36 as a tool attachment for attachment of the tool in the form of the hexagonal head 36 is integrally formed and formed on the threaded spindle 34.
  • the threaded spindle 34 passes through a bush or a bearing part 38 of the housing 6 in such a way that it is guided in a sealed manner in order to be able to carry out a rotational movement. At the same time the threaded spindle 34 is prevented by a locking washer 40 at an axial movement relative to the housing 6.
  • a contact portion 42 of the piston plate 20 is further arranged, for example in the form of a held by a locking ring 44 disc against which a screwed to the threaded spindle 34 nut 46 and thereby the spring brake piston 16 in the direction of the bottom 18th the housing 6 to, ie can take in Bremslbücherraum.
  • the threaded spindle 34 and the hexagonal head 36 act here as an actuating device which cooperates with a transmission device in the form of the nut 46. This is in engagement with the thread of the threaded spindle 34 such that a rotational movement of the threaded spindle 34 is transmitted in a linear movement of the nut 46 in the axial direction.
  • the executed here as a hex nut 46 is positively received in a guide member 47 in the cavity 32 of the spring brake piston rod 22 so that they can not rotate.
  • the emergency release device 30 also has an indicator device.
  • This includes an indicator rod 48 having a display portion 50 and a smaller diameter control portion 52 stepped therefrom.
  • the indicator rod 48 is preferably made of at least one plastic and passes through the threaded spindle 34 in the center and is guided sealed therein so that a movement in the axial direction is possible.
  • the indicator rod 48 is biased by a spring 54 relative to a step portion 56 in the threaded spindle 34 so that the display portion 50 is pressed outward.
  • the stopper body 58 is positively connected to the indicator rod 48 by means of a relative axial movement between the indicator rod 48 and the stopper body 58 releasable detent or clip connection 60.
  • the stopper body 58 is biased meanwhile by the spring means 68 against the end of the threaded spindle 34. Then the indicator rod 48 is pushed inwardly linearly until its end provided with a collar the edge of a receiving opening of the stopper body 58 passes radially elastic widening thereof and then this edge engages behind the releasable detent or clip connection 60 between the indicator rod 48 and the stopper body 58th manufactures.
  • the stopper body 58 is supported against the pressure force exerted by the indicator rod 48 by the spring means 68 on the spring brake piston rod 22.
  • the resilience of the stopper body 58 by means of the spring means 68 after penetrating the slightly smaller diameter in the exception opening in comparison to the diameter of the annular collar supports the formation of the latching connection 60th
  • the hexagonal head 36 of the threaded spindle 34 is rotated so that a side surface of the nut 46 abuts against the abutment portion 42 of the piston plate 20 and this in the course of the rotational movement against the bias of Memory spring 12 pulls toward the bottom 18 of the housing 6.
  • the indicator portion 50 of the indicator rod 48 is urged by the spring 54 so that an outer end thereof protrudes outwardly beyond the spring 54 Hex head 36 protrudes and thereby indicates that the spring brake cylinder 4 is released.
  • the threaded spindle 34 is rotated by means of the hexagonal head 36 so that the nut 46 moves away from the bottom 18 of the housing 6 in the axial direction.
  • the stopper body 58 of the indicator device By a continued screwing the nut 46 in the spring brake piston rod 22, this finally comes into engagement with the stopper body 58 of the indicator device and thereby enforces a linear displacement of the indicator rod 48 against the spring force of the spring 54.
  • the display section 50 is thereby relative to the hexagonal head 36 and the outer end of the threaded spindle 34 moves so that it is retracted until it is arranged substantially flush thereto. A user can then recognize that the spring brake cylinder 1 is not manually released.
  • the piston plate 20 follows this movement, wherein the side surface of the nut 46 remains in contact with the abutment portion 42 on the piston head 20. With the piston plate 20 and the spring brake piston rod 22 moves away from the bottom 18 of the housing 6, so that a braking force is exerted on the not shown here service brake device beyond the flange 8. As soon as the maximum braking force is applied, however, the piston plate 20 of the nut 46 does not follow.
  • the spring brake cylinder 1 is then in the normal operating position in which the brake actuation either by compressed air, or if no compressed air is present, a braking action by the accumulator spring 12 is triggered.
  • compressed air is introduced into the spring brake chamber 10 controlled by an air inlet, not shown here, such that this compressed air overcomes the spring force of the accumulator spring 12 and so optionally, depending on the amount of pressure, the brake is released or actuated.
  • Fig. 2 is an enlarged section of the emergency release of Fig.1 instead of in Fig. 1 the arrangement shown, a device and an arrangement for locking screwable elements according to a preferred embodiment of the invention shows.
  • a screwable element of the formed on the outer end of the threaded spindle 34 hexagonal head 36 at its axially upward or from the spring brake cylinder away facing surface and at least two side faces of the hexagonal head 36th With the exception of a slot or groove shape, ie provided with gaps and / or grooves along its surface and on at least two lateral side surfaces.
  • the gaps and grooves are aligned with each other so that a locking device 80 with a part-annular central portion (partially open ring member) 82 and two extending from the central portion outwardly extending locking portions (locking wings or wings) 84 by means of the ring member 82, the display section 50 encompassing and centered against rotation in the hexagonal head 36 can be inserted.
  • the locking device 80 thus consists on the one hand of the open on one side round or ring member 82, the in Fig. 2 is indicated by dashed lines, with a diameter such that it is used on the one hand in the hexagonal head 36 surrounds the display section 50 playful, without affecting its mobility and indicator function, and clamped against the inner wall of the hexagonal head 36 due to smaller diameter of the opening of the hexagonal head 36, and on the other hand so far in the recess (s) of the hexagonal head 36 can dive that he out the upper surface of the hexagonal head 36 no longer protrudes, and on the other from at least two - preferably symmetrically - diametrically opposite, extending from the ring member 82 outwardly extending bow or wing-like sections, arms or arms (locking portions) 84th
  • Each locking portion 84 is by a, preferably resilient, bending elastic and a restoring force generating deformable, starting from the ring member 82 and outwardly along its course preferably 90 ° downwardly extending web 86 with a predetermined bending radius playful in the recess or the recesses of the Hexagon head 36 guided.
  • a recess 88 provided in the height direction or in the axial direction at the annular part-side end of each locking section 84 is configured to form a support for the corresponding locking section 84 in the corresponding recess of the hexagonal head 36 and thereby the insertion depth of the locking device 80 into the hexagonal head 36 defined and / or limited.
  • the formation 88 is formed symmetrically with respect to the ring part 82 and thereby provides an optional immersion depth limitation on both sides.
  • each locking device 80 also has a pressure receiving portion 90 remote from the ring portion 82.
  • the pressure receiving portion 90 is planar with preferably an oblique to a sliding surface 90a elastically formed on this coupled, beveled Auflauf or Aufgleitteil composition 90b.
  • the slide-up portion 90b serves to smoothly guide an attaching tool having a smaller opening or inner diameter than the lateral extent of the locking device 80 onto the sliding surface 90a, while acting on the surfaces (90a and 90b) To absorb clamping or compressive force of the tool and to guide due to elastic deformation of the locking portion 84 in the bending radius of the web 86.
  • each locking portion 84 also, also lying away from the ring member 82, a substantially with legs, of which one is shortened and underside has a skew, substantially U-shaped extending end portion 92.
  • the shape and extent of the end portion 92 in the longitudinal direction of the locking portion 84 are dimensioned so that a hook-shaped end 94 of the end portion 92 (a total hook-shaped end portion 92, 94) between the bearing part 38 and the hexagonal head 36 lying annular disc member 96 in the relaxed rest position engages under the locking wing 84 and / or engages behind, it may fall into abutment against the annular disc member 96.
  • an outside edge of the trough-shaped circumferential recess 98 and an inner circumferential edge of the disk-shaped element 96 have no (as in FIG Fig. 2 shown), only a slight overlap or overlap or only a slight distance from each other. In this case, an insertion of the locking device 80 without tools manually, in the case of the threaded spindle 34 z. B.
  • the hook-shaped end 94 on a beveled at a suitable angle to the axial or horizontal direction extending lower side part of the inside upper edge of the annular disc member 96, thereby causing elastic deformation of the locking device 80 with inward movement of the U-shaped end portion 92 into the trough-shaped recess 98, then moving further down the inner circumference of the annular disc member, and finally upon reaching the inside lower edge of the annular disk element 96 automatically returns to the relaxed rest position or latching position in a recess 100 of the bearing part 38.
  • the recess 100 and the bearing part 38 cooperatively form a latching device. In other words, by exerting a downward force on the locking device 80, it can be easily slipped on and snapped ("clipped").
  • the locking action of the locking device 80 can be achieved in cooperation with the bearing member 38.
  • the bearing part 38 is preferably provided radially with at least two (for receiving a respective locking portion 84), more preferably, however, a plurality of corresponding to the hook-shaped end 94 and the locking effect in predetermined finely graded distance dissolving recesses 100.
  • the recesses 100 are covered by the annular disc member 96 upwards, so that in the use state small cavities under the annular disc member 96 and in the bearing member 38 form, in which the hook-shaped end 94 can engage in the locked state.
  • the spacing between two recesses 100 or the distances between two recesses 100 around the bearing part 38 are preferably graduated so finely that a self-locking action is provided for a respective hook-shaped end 94. If a desired end position is at least approximately reached during the rotation of the hexagonal head 36 with attached tool, ie in an unlocked state, and the tool is removed from the hexagonal head 36 in this end position, it may happen that at least one hook-shaped end 94 is not exactly one Recess 100 is opposite, but before or on the formed between two recesses 100 web (from material, for example, the bearing part 38) comes to rest and thus not directly in engage the recess 100 and can engage in it.
  • the recesses 100 along the circumference of the bearing part 38 are now finely graduated in such a way that even a slight further rotation of the hexagonal head 36 and the locking device 80, for example, triggered by vibration or force effects of otherwise suitable type in the subsequent operation of the vehicle, sufficient to at least slide a hook-shaped end 94 of the web in a respective closest recess 100 and let it snap into place.
  • this has, inter alia, the advantage that, for example, it can be sufficient to place a marking on the hexagon head with sufficient accuracy on a marking on, for example, the bearing part 38 or the like and then to pull off the tool.
  • the locking effect occurs either immediately or, if necessary, at the earliest opportunity.
  • the additional rotation required for this purpose can be defined by suitable selection of the number of recesses 100 and their spacing and kept within a desired range of admissibility.
  • the distribution of the recesses 100 along the circumference of the bearing part 38 may in this case be provided at equal intervals, or at varying intervals such that along the circumference sections with smaller and / or larger distances between recesses are generated.
  • varying distances for example, a basic or desired position more accurate compliance with the basic or desired position can be achieved even with the self-locking, without increasing the manufacturing and processing costs for the entire bearing part circumference according to such exactness requirement.
  • the number of recesses 100 may, for example, be 8 or 16 in a practical embodiment. However, there is no restriction on this.
  • the recesses 100 need not necessarily be molded directly into the bearing part 38, but can also be provided for example by a separate, insertable into the bearing part 38 or can be placed on the bearing part 38, for example, flat locking ring. In the latter case, it is conceivable to provide the bearing part 38 on the upper side and the locking ring on the underside, or the bearing part 38 on an inside circumference of a locking ring receptacle and the locking ring on an outside circumference, with suitable and / or corresponding formations (an anti-twist device) Prevent twisting of the locking ring relative to the bearing part 38.
  • the recesses 100 may alternatively be provided in the annular disc element 96, provided that a rotation of the annular disc element 96 relative to the bearing part 38 is prevented.
  • a device for locking screwable elements is already basically formed by the locking device 80, as far as a screwable element and a bearing area, guide area and / or casserole area are designed for the same suitable (for example, screwable elements and such areas basically for use with the locking device 80 be provided, without the use of the locking device must in any case be immediate), a system or arrangement for locking screw-threaded elements by cooperation of a molded for receiving the locking device screwed element, the locking device itself and with recesses for the intervention of the locking device provided therein, preferably self-rotationally secured bearing or casserole part created. In the latter case, in particular, the possibility arises of retrofitting existing screw connections.
  • the material of the locking device 80 is not limited to a specific material, since in an anti-rotation of the screwable element usually only small forces (such as only lateral forces about the axial direction) acting on the locking device 80.
  • sufficiently break-resistant and / or sufficiently elastic and yet sufficiently rigid or rigid plastics are suitable for producing the locking device 80.
  • the locking device 80 may also be illustrated with, for example, a metal stamped stamped part, such as an elasticity and restoring force that is sufficient for deformation, and thus a corresponding spring action with likewise sufficient bending stiffness, providing sheet metal material.
  • FIG. 3A to 3C show using the same reference numerals for in the Fig. 1 and 2 already shown elements schematic views of the locking device 80 according to the preferred embodiment, wherein Fig. 3A FIG. 5 is a plan view of the locking device 80; FIG. Fig. 3B one too Fig. 3A corresponding side view of the locking device 80 represents, and Fig. 3C a perspective view of the locking device 80 is shown.
  • Fig. 3A It is also shown that the pressure receiving portions 90 of the two locking portions 84 are aligned to abut on each diagonally opposite half of the side surface of the hexagonal head 36 traversed centrally by the recess (gap or groove) with the locking device 80 inserted into the hex head 36 come lie.
  • This arrangement provides a good force input into the locking portions 84 and the hexagonal head 36 upon rotation thereof with the tool and, because the rotational forces engage in the same direction and are directed in the same direction in the locking device 80, an undesirable tension in and / or a self-deformation of the same during the rotational movement against.
  • a locking device 80 remaining installed in itself can undesirably provide a lower anti-rotation effect and be exposed to a higher risk of breakage.
  • Fig. 4 shows by using the same reference numerals for in the Fig. 1 to 3
  • Elements already shown are a simplified perspective view of one of a screwable part (the hexagonal head 36), the locking device or the locking element 80 and a latching section 38, 100 with the recesses 100 (here partially on the bearing part 38; ) existing arrangement according to the preferred embodiment of the invention.
  • FIG. 4 illustrated Fig. 4 the interaction of these elements in that the hexagonal head 36 is recessed on the top and along two of its side surfaces groove-shaped. In this recess, the locking device 80 is inserted so that the ring member 82 loosely engages the display section 50 and is centered on the inner circumference, for example, at a thread, the hexagonal head 36 against the inner circumference spanning, and the locking portions 84 in the lateral recess or Groove of the hexagonal head 36 to the bearing part 38 toward.
  • the hakenfömige end 94 of the locking portion 84 is located in a recess 100 in the bearing part 38 and engages behind the annular disc member 96th
  • the device for locking a screwable element and an assembly used in conjunction with other parts have been described in terms of a rotationally secure holding a threaded spindle for a manual emergency release of a spring brake cylinder.
  • application or application areas of the locking device or the arrangement are not limited thereto, but are manifold and in particular to screw connections that are on the one hand set and secure against automatic and / or unwanted twisting or loosening or Fest., but on the other hand one at any time possible adjustment or a possible release at any time remain accessible.
  • Each locking portion (80) includes a land (86) connecting the locking portion (84) to the ring portion (82) and having a web portion having a predetermined curvature around and / or at which the locking portion (84) is subjected to a compressive force from the outside in the second plane is deflected, a pressure receiving portion (90) for receiving the pressure force, and a hook-shaped end portion (92, 94) which moves in a force-biased deflection of the locking portion (84) in an unlocked position, and self-pressurizing force returns to a locked position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Clamps And Clips (AREA)
EP14001157.8A 2013-04-04 2014-03-28 Dispositif et agencement de verrouillage d'éléments filetés Active EP2787222B1 (fr)

Applications Claiming Priority (1)

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DE102013103345.8A DE102013103345A1 (de) 2013-04-04 2013-04-04 Vorrichtung und Anordnung zur Verriegelung von schraubbaren Elementen

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115158269A (zh) * 2022-07-11 2022-10-11 东风柳州汽车有限公司 一种abs轮速传感器的固定压紧装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015107126A1 (de) * 2015-05-07 2016-11-10 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Vorrichtung und Anordnung zur Verriegelung von schraubbaren Elementen
CN110821942A (zh) * 2019-10-25 2020-02-21 贵州航天精工制造有限公司 一种整流罩口盖用快卸锁

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597278A (en) * 1995-07-24 1997-01-28 Maclean-Fogg Company Locking fastener assembly for threaded joint
JP2009092229A (ja) * 2007-10-05 2009-04-30 Wakai & Co Ltd 螺具の補助材

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE593758C (de) * 1934-03-02 C Th Frielinghaus Fa Schraubensicherung fuer Scheibenraeder
US1414761A (en) * 1921-03-10 1922-05-02 Thamann George Henry Lock bolt and nut
US4812094A (en) * 1987-09-24 1989-03-14 Maclean-Fogg Company Locking fastener assembly for threaded joint
BE1010951A4 (fr) * 1997-02-26 1999-03-02 Mayeres Monique Ecrou a verrouillage positif et micrometrique automatique.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597278A (en) * 1995-07-24 1997-01-28 Maclean-Fogg Company Locking fastener assembly for threaded joint
JP2009092229A (ja) * 2007-10-05 2009-04-30 Wakai & Co Ltd 螺具の補助材

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115158269A (zh) * 2022-07-11 2022-10-11 东风柳州汽车有限公司 一种abs轮速传感器的固定压紧装置
CN115158269B (zh) * 2022-07-11 2023-07-07 东风柳州汽车有限公司 一种abs轮速传感器的固定压紧装置

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EP2787222B1 (fr) 2017-05-31

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